Summary of Significant Accounting and Reporting Policies (Tables)

12 Months Ended

Jul. 31, 2015

Accounting Policies [Abstract]

Schedule of numerators and denominators used in basic and diluted EPS calculations

The following table reconciles the numerators and denominators used in the basic and diluted EPS calculations:

	Fiscal Years Ended July 31,
	2015		2014	2013
Numerator:
Net income for basic calculation	$	23,245,000	25,151,000	17,808,000
Effect of dilutive securities:
Interest expense (net of tax) on 3.0% convertible senior notes	—		3,394,000	4,468,000
Numerator for diluted calculation	$	23,245,000	28,545,000	22,276,000
Denominator:
Denominator for basic calculation	16,203,000		15,943,000	16,963,000
Effect of dilutive securities:
Stock-based awards	215,000		254,000	91,000
Conversion of 3.0% convertible senior notes	—		4,709,000	6,010,000
Denominator for diluted calculation	16,418,000		20,906,000	23,064,000